CN102706324B - High-precision real-time inclination sensor based on combination of simple pendulum principle and laser ranging - Google Patents
High-precision real-time inclination sensor based on combination of simple pendulum principle and laser ranging Download PDFInfo
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- CN102706324B CN102706324B CN201210227211.XA CN201210227211A CN102706324B CN 102706324 B CN102706324 B CN 102706324B CN 201210227211 A CN201210227211 A CN 201210227211A CN 102706324 B CN102706324 B CN 102706324B
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Abstract
The invention discloses a high-precision real-time inclination sensor based on combination of a simple pendulum principle and laser ranging. The high-precision real-time inclination sensor comprises a bearing seat, a circuit part, a laser sensor, a container, damping fluid, a pendulum bob, a T-type rocking beam and a light reflecting surface with a mark, which are arranged in a shell, wherein the circuit part comprises a laser sensor, an amplifying unit, a calculating unit and a communication interface unit which are sequentially connected; and the amplifying unit comprises a display module and a function adjustment button. The high-precision real-time inclination sensor based on the combination of the simple pendulum principle and the laser ranging has the advantages of strong anti-electromagnetic interference capacity, good stability, no influence by temperature change, convenience for operation, and high measurement accuracy, is suitable for monitoring industrial production and deformation of various project structures, is especially suitable for monitoring the deformation of a civil engineering structure, and has stronger practical value and practical significance.
Description
Technical field
Obliquity sensor while the present invention relates to a kind of high-precision real combining based on single pendulum principle and laser ranging, belongs to sensor technical field.
Background technology
In existing technology, obliquity sensor tool in engineering field has been widely used, and typical application all will often be monitored their angles of inclination with respect to pedal line as bridge, mansion, dam etc., to monitor the safe coefficient of buildings.
At present, obliquity sensor is divided into three kinds of gas pendulums, liquid pendulum-type, solid pendulum-type from principle of work.Gas pendulum slant angle sensor is to put forward for the shortcoming of existing pendulum-type slant angle sensor.The sensitive-mass of gas pendulum obliquity sensor is gas.Gas is the unique movable body in seal chamber, and its quality is less, and the inertial force producing in the time of large impact or high overload is also very little, so have stronger anti-vibration or impact capacity.Liquid pendulum-type tilt angle sensor system is stable, in High Definition Systems, apply comparatively extensive, but the shortcoming such as liquid pendulum-type obliquity sensor exists narrow dynamic range, and dynamic response frequency is low is also higher to measurement environment requirement.Solid pendulum obliquity sensor has clear and definite pendulum length and center of oscillation, and product type mostly is electromagnetic pendulum formula in practicality, its product measurement range, precision and anti-overload ability are higher, in engineering, application is also comparatively extensive, but be subject to electromagnetic interference (EMI), and be also more and more difficult to meet monitoring requirement now at aspects such as continuity, real-time and measurement sensitivity.Existing optical fiber grating inclination angle sensor is because the shortcomings such as measuring accuracy is low, the life-span is short, volume is large are difficult to be applied to the deformation monitoring of bridge structure.
Summary of the invention
For overcoming the problems referred to above, obliquity sensor while the invention provides a kind of high-precision real combining based on single pendulum principle and laser ranging, it is simple in structure, can realize Real-Time Monitoring.
The present invention includes the bearing seat, circuit part, laser sensor, container, damping fluid, pendulum, T-shaped fork, the graduated light reflection surface that are installed in housing.Described circuit part comprises the laser sensor, amplifying unit, calculation unit, the communications interface unit that connect successively, and described amplifier unit is provided with display module, A/D converter and function regulating key, and described T-shaped fork is supported by bearing seat.Described bearing seat is fixed on upper end face in housing.Described pendulum is cemented on T-shaped fork, and described pendulum can only freely swing in a specific perpendicular, and graduated light reflection surface is installed in the bottom of described T-shaped fork, and described pendulum is immersed in the container with damping fluid.Described laser sensor is right against graduated light reflection surface and is fixed on the middle part in housing, in the time that Laser emission runs in the plane at middle part of T-shaped fork, reflects, and laser sensor receives reflected signal.The present invention is contained on testee, in the time of testee run-off the straight, pendulum drives T-shaped fork to rotate an angle, the laser of generating laser transmitting reflects while running in the plane in the middle part of T-shaped fork, laser sensor receives signal, namely displacement, difference by this twice displacement is long divided by the bar of setting, and just obtains pitch angle through arc tangent conversion.
Described laser sensor is normal reflection laser sensor.Described housing is aluminium alloy protection box, and described T-shaped fork adopts stainless steel material, and described bearing seat adopts cylindrical bearing.
Ultimate principle of the present invention is that the variation based on single pendulum inclination angle all can cause the change of distance between laser sensor and reflecting surface, utilize always principle straight down of single pendulum, detect the relative displacement variable quantity of pendulum by laser range sensor, calculate relative distance variation through amplifying unit and calculation unit, then according to the transformation for mula of geometrical principle and trigonometric function, the inclinometer of testee is calculated.Laser sensor can be realized noncontacting measurement, and speed is fast, and precision is high, and anti-light, electrical interference ability is strong etc.Amplifying unit can carry out corresponding data acquisition and data processing, thereby obtains inclination angle and change in displacement, and by the display module of amplifying unit, test result is shown.
The present invention compared with prior art has following advantages: anti-electromagnetic interference capability is strong, good stability, is not acted upon by temperature changes, and easy to operate, measuring accuracy is high, and resolution can reach 0.5 second of arc, has greatly improved the precision of engineering detecting system; Adopt the T-shaped swing rod structure of stainless steel material, improved the intensity of T-shaped fork; Adopt pendulum to be immersed in the container that damping fluid is housed, can strengthen the stability of instrument; The protection box that adopts aluminum alloy materials to make, sensor can linearly be described at 0 DEG C to 50 DEG C, thus it can adapt to extraneous test environment complicated and changeable, and directly apply in Practical Project; Employing has the cylindrical bearing of one-directional rotation, can reduce the friction force between pendulum and balance staff, reduces the skew of pendulum front and back, thereby makes rotation sensitiveer, and measurement of dip angle accuracy is higher; The present invention is applicable to the monitoring of suitability for industrialized production and various Engineering Structure Distortions, is specially adapted to the monitoring of civil engineering structure distortion, has stronger practical value and realistic meaning.
Brief description of the drawings
The structural representation of the circuit part of obliquity sensor when Fig. 1 is a kind of high-precision real combining based on single pendulum principle and laser ranging of the present invention,
The concrete structure schematic diagram of obliquity sensor when Fig. 2 is a kind of high-precision real combining based on single pendulum principle and laser ranging of the present invention.
Wherein, figure a is front view, and figure b is side view.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described: as shown in Figure 1, 2, the present invention includes the bearing seat 1, circuit part 2, laser sensor 3, container 4, damping fluid 5, pendulum 6, T-shaped fork 7, the graduated light reflection surface 8 that are installed in housing 9.Circuit part 2 comprises the laser sensor, amplifying unit, calculation unit, the communications interface unit that connect successively, and described amplifier unit is provided with display module, A/D converter and function regulating key, and T-shaped fork 7 is supported by bearing seat 1.Bearing seat 1 is fixed on the interior upper end face of housing 9.Pendulum 6 is cemented on T-shaped fork 7, and pendulum 6 can only freely swing in a specific perpendicular, the graduated light reflection surface 8 of bottom tool for mounting of T-shaped fork 7, and pendulum 6 is immersed in the container 4 with damping fluid 5.Laser sensor 3 is right against graduated light reflection surface 8 and is fixed on the middle part in housing 9.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited to this, is anyly familiar with those skilled in the art in scope disclosed by the invention; the variation that can expect easily or replacement, all should be encompassed in the protection domain of the claims in the present invention.
Claims (3)
1. obliquity sensor when the high-precision real combining based on single pendulum principle and laser ranging, it is characterized in that: comprise the bearing seat being installed in housing, circuit part, laser sensor, container, damping fluid, pendulum, T-shaped fork, graduated light reflection surface, described circuit part comprises the laser sensor connecting successively, amplifying unit, calculation unit, communications interface unit, described T-shaped fork is supported by bearing seat, described bearing seat is fixed on upper end face in housing, described pendulum is cemented on T-shaped fork, graduated light reflection surface is installed in the bottom of described T-shaped fork, described pendulum is immersed in the container with damping fluid, described laser sensor is right against graduated light reflection surface and is fixed on the middle part in housing, described amplifier unit is provided with display module, A/D converter and function regulating key, described bearing seat adopts the cylindrical bearing with one-directional rotation.
2. obliquity sensor when a kind of high-precision real combining based on single pendulum principle and laser ranging according to claim 1, is characterized in that: described T-shaped fork adopts stainless steel material.
3. obliquity sensor when a kind of high-precision real combining based on single pendulum principle and laser ranging according to claim 1, is characterized in that: described housing is aluminium alloy protection box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210227211.XA CN102706324B (en) | 2012-06-30 | 2012-06-30 | High-precision real-time inclination sensor based on combination of simple pendulum principle and laser ranging |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210227211.XA CN102706324B (en) | 2012-06-30 | 2012-06-30 | High-precision real-time inclination sensor based on combination of simple pendulum principle and laser ranging |
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| CN102706324A CN102706324A (en) | 2012-10-03 |
| CN102706324B true CN102706324B (en) | 2014-06-25 |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103542838B (en) * | 2013-10-31 | 2015-07-08 | 东南大学 | Solid pendulum-bob-type tilt angle sensor |
| CN106705929B (en) * | 2017-01-23 | 2022-07-08 | 河南工业大学 | Building inclination dynamic measuring instrument and using method thereof |
| CN106974452B (en) * | 2017-03-29 | 2022-05-27 | 西安科技大学 | Storage protection cabinet and method for combustible gas high-pressure gas cylinder |
| CN107677250A (en) * | 2017-10-16 | 2018-02-09 | 广州市建设工程质量安全检测中心 | A kind of high-precision pendulum field intensity type inclination measurement system and method for being used to monitor |
| CN110207660A (en) * | 2019-06-28 | 2019-09-06 | 中国二十二冶集团有限公司 | Measure the measuring appliance of girder steel levelness, verticality of steel column |
| CN110411356B (en) * | 2019-07-30 | 2021-11-02 | 安徽安凯汽车股份有限公司 | ECAS debugging auxiliary system for automobile |
| CN112648986B (en) * | 2020-11-17 | 2022-06-28 | 中船航海科技有限责任公司 | High-precision photoelectric pendulum and inclination angle calculation method thereof |
| CN115031624B (en) * | 2021-03-03 | 2023-09-12 | 成都阿朗科技有限责任公司 | Measuring mechanism, measuring system and measuring method |
| CN114674414B (en) * | 2022-04-13 | 2023-04-28 | 中国科学院空天信息创新研究院 | Low-frequency vibration sensor based on micro-pixel centroid positioning and working method thereof |
| CN115096279A (en) * | 2022-06-28 | 2022-09-23 | 湖南科技大学 | Solar concentrator azimuth axis inclination monitoring system based on plumb and optical imaging |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1250870A (en) * | 1998-09-29 | 2000-04-19 | 株式会社拓普康 | Arrangement for measuring position, and rotating laser device for setting inclination |
| CN2713442Y (en) * | 2004-05-13 | 2005-07-27 | 黄山定 | Sensor device |
| CN201638423U (en) * | 2009-07-23 | 2010-11-17 | 南京化工职业技术学院 | Real-time single pendulum oscillation demonstrating instrument |
| CN102339541A (en) * | 2011-09-23 | 2012-02-01 | 无锡艾德里安科技有限公司 | Electronic simple pendulum demonstrating device |
| CN202928568U (en) * | 2012-06-30 | 2013-05-08 | 交通运输部公路科学研究所 | High-precision real-time inclination angle sensor based on pendulum principle and laser ranging |
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2012
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1250870A (en) * | 1998-09-29 | 2000-04-19 | 株式会社拓普康 | Arrangement for measuring position, and rotating laser device for setting inclination |
| CN2713442Y (en) * | 2004-05-13 | 2005-07-27 | 黄山定 | Sensor device |
| CN201638423U (en) * | 2009-07-23 | 2010-11-17 | 南京化工职业技术学院 | Real-time single pendulum oscillation demonstrating instrument |
| CN102339541A (en) * | 2011-09-23 | 2012-02-01 | 无锡艾德里安科技有限公司 | Electronic simple pendulum demonstrating device |
| CN202928568U (en) * | 2012-06-30 | 2013-05-08 | 交通运输部公路科学研究所 | High-precision real-time inclination angle sensor based on pendulum principle and laser ranging |
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| CN102706324A (en) | 2012-10-03 |
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